A feeding mechanism of an injection molding machine for automobile parts

Abstract

This utility model discloses a feeding mechanism for an injection molding machine for automotive parts, relating to the field of automotive parts processing technology. It includes a base frame, a support frame, and a collection bin. The support frame is inclinedly installed on the upper side of the base frame, and a spiral conveying mechanism is fixedly installed on the upper side of the support frame. A particle dispersing mechanism is fixedly connected to the upper end of the spiral conveying mechanism. In this utility model, agglomerated plastic particles fall into the collection bin and disperse upon impact. The remaining agglomerated plastic particles remain on the perforated plate, where rotating rollers disperse them under the action of the perforated plate. Finally, the particles fall through the perforated plate holes into the ring shell. The bottom of the ring shell's inner cavity is an inclined surface with a high center and low edges. The particles roll along the inclined surface and enter the injection molding machine's barrel through multiple sets of feeding pipes, ensuring relatively uniform particle size, preventing agglomerated particles from clogging the pipes, and avoiding insufficient melting of the particles, thereby ensuring the quality of the injection-molded automotive parts.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a feeding mechanism for an injection molding machine for automotive parts. Background Technology

[0002] In the injection molding production of automotive parts, the feeding mechanism of the injection molding machine is a key link to ensure a continuous and stable supply of raw materials. Its core function is to transport plastic granules, such as PP, ABS, PA and other commonly used automotive engineering plastics, from the storage device to the injection molding machine barrel.

[0003] However, plastic granules can clump together due to their hygroscopic properties, environmental humidity, temperature fluctuations, and static electricity. In the injection molding production of automotive parts, clumped granules entering the injection molding machine can trigger a series of chain problems: The size of agglomerated particles can easily cause pipe blockage and screw feeder jamming, leading to injection molding machine interruptions and forcing the production line to stop for cleaning, which seriously affects the production cycle. In particular, since automotive parts are mostly produced in batches and continuously, downtime may result in the loss of thousands of units of production capacity.

[0004] If agglomerated particles enter the barrel without being treated, they will form "cold material" due to insufficient melting, leading to defects such as bubbles, shrinkage marks, material shortages, and decreased mechanical properties in the finished product. If agglomerated particles are mixed into exterior parts such as car bumpers and dashboards, they may cause surface flow marks or internal stress concentrations, affecting the product's strength and aesthetics, and even posing safety hazards. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a feeding mechanism for an injection molding machine for automotive parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a feeding mechanism for an injection molding machine for automotive parts, comprising a base frame, a support frame, and a collection bin. The support frame is inclinedly installed on the upper side of the base frame, and a spiral conveying mechanism is fixedly installed on the upper side of the support frame. A particle dispersing mechanism is fixedly connected to the upper end of the spiral conveying mechanism. The particle dispersing mechanism includes a discharge bin, rollers, an annular shell, a discharge pipe, a connecting frame, a servo motor, a connecting seat, a perforated plate, and a central shaft. Multiple sets of rollers are arranged in a circular array and rotatably installed on the outer side of the connecting seat. The connecting seat is fixedly connected to the upper end of the central shaft. The central shaft passes through the perforated plate, and the rollers roll on the upper side of the perforated plate. The perforated plate is fixedly installed on the upper end of the annular shell, and multiple sets of discharge pipes are fixedly connected to the outer opening of the annular shell.

[0007] Preferably, the bottom of the inner cavity of the ring shell is a frustum-shaped inclined surface, and the central shaft passes through the ring shell and is fixed to the output shaft of the servo motor through a coupling.

[0008] Preferably, the ring shell is fixedly connected to the upper side of the connecting frame, and the servo motor is fixedly connected to the middle of the connecting frame.

[0009] Preferably, the material hopper is fixedly connected to the ring shell by bolts, and the connecting seat is located in the middle of the upper side of the perforated plate.

[0010] Preferably, the screw conveying mechanism includes a geared motor, a long cylinder and a screw shaft. The discharge bin is fixedly connected to the upper outlet position of the long cylinder. The screw shaft is rotatably installed inside the long cylinder, and one end of the screw shaft is fixedly connected to the screw shaft via a coupling.

[0011] Preferably, the geared motor and the long cylinder are both fixedly connected to the upper inclined surface of the support frame, and the collection bin is fixedly connected above the lower inlet of the long cylinder.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, during the process of falling into the feeding hopper, the agglomerated plastic particles will disperse upon impact. The remaining agglomerated plastic particles will remain on the perforated plate. The rotating rollers disperse them under the action of the perforated plate and finally fall into the ring shell through the holes of the perforated plate. The bottom of the inner cavity of the ring shell is an inclined surface with a high center and low edges. The particles roll along the inclined surface and enter the barrel of the injection molding machine from multiple sets of feeding pipes, ensuring that the size of the fed particles is relatively uniform, avoiding blockage of the pipes caused by agglomerated particles, and also avoiding insufficient melting of particles, thereby ensuring the quality of the injection-molded automotive parts.

[0013] 2. In this utility model, after the speed reduction motor reduces speed and increases torque, it drives the spiral shaft to rotate in the long cylinder, which puts the plastic particles into the collection bin. After the spiral blades of the spiral shaft rotate, they convey the plastic particles upward along the inner wall of the long cylinder, which makes it convenient for operators to complete the feeding into the cylinder at a low position and avoids frequent lifting for feeding. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of the feeding mechanism of an injection molding machine for automotive parts; Figure 2 This utility model provides a three-dimensional structural diagram of the internal structure of the feeding mechanism of an injection molding machine for automotive parts; Figure 3 This utility model provides a three-dimensional structural diagram of the particle dispersion mechanism inside the feeding mechanism of an injection molding machine for automotive parts. Figure 4 This utility model presents a three-dimensional structural diagram of the particle dispersion mechanism in the feeding mechanism of an injection molding machine for automotive parts.

[0015] Legend: 1. Base frame; 2. Bearing frame; 3. Screw conveying mechanism; 31. Gear motor; 32. Long cylinder; 33. Screw shaft; 4. Collection bin; 5. Particle dispersion mechanism; 51. Drop bin; 52. Roller; 53. Ring shell; 54. Feed pipe; 55. Connecting frame; 56. Servo motor; 57. Connecting seat; 58. Perforated plate; 59. Central shaft. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a feeding mechanism for an injection molding machine for automotive parts, including a base frame 1, a support frame 2, and a material collection bin 4. The support frame 2 is inclinedly installed on the upper side of the base frame 1. A spiral conveying mechanism 3 is fixedly installed on the upper side of the support frame 2. A particle dispersing mechanism 5 is fixedly connected to the upper end of the spiral conveying mechanism 3. The particle dispersing mechanism 5 includes a discharge bin 51, rollers 52, an annular shell 53, a discharge pipe 54, a connecting frame 55, a servo motor 56, a connecting seat 57, a perforated plate 58, and a central shaft 59. Multiple sets of rollers 52 are arranged in a circular array and rotatably installed on the outside of the connecting seat 57. The connecting seat 57 is fixed. The central shaft 59 is connected to the upper end of the central shaft 59, which passes through the perforated plate 58. The roller 52 rolls on the upper side of the perforated plate 58. The perforated plate 58 is fixedly installed on the upper end of the ring shell 53. Multiple sets of feed pipes 54 are fixedly connected to the outer opening of the ring shell 53. The bottom of the inner cavity of the ring shell 53 is a frustum inclined surface. The central shaft 59 passes through the ring shell 53 and is fixed to the output shaft of the servo motor 56 through a coupling. The ring shell 53 is fixedly connected to the upper side of the connecting frame 55. The servo motor 56 is fixedly connected to the middle of the connecting frame 55. The discharge bin 51 is fixedly connected to the ring shell 53 by bolts. The connecting seat 57 is located in the middle of the upper side of the perforated plate 58.

[0019] The specific settings and functions of this embodiment are described below: While the injection molding machine is preheating, the spiral conveying mechanism 3 and the particle dispersing mechanism 5 operate simultaneously. The spiral conveying mechanism 3 conveys the plastic particles upwards, controlling the servo motor 56 to start. The servo motor 56 drives the central shaft 59 to rotate between the perforated plate 58 and the ring shell 53 via a coupling. The central shaft 59 drives the connecting seat 57 to rotate, thereby causing the multiple sets of rollers 52 mounted on its outer side to perform a fan-shaped motion. When the plastic particles are conveyed to the upper outlet of the long tube 32, they enter the discharge bin 51 and fall directly onto the perforated plate 58. The aperture of the perforated plate 58 is slightly larger than the average size of the plastic particles, therefore... Clumped particles pass directly through the holes in the perforated plate 58. As the clumped plastic particles fall into the feed hopper 51, they are dispersed upon impact. The remaining clumped plastic particles remain on the perforated plate 58, where the rotating roller 52 disperses them under the action of the perforated plate 58. Finally, the particles fall through the holes in the perforated plate 58 into the ring shell 53. The bottom of the inner cavity of the ring shell 53 is an inclined surface with a high center and low edges. The particles roll along the inclined surface and enter the barrel of the injection molding machine through multiple sets of feed pipes 54, ensuring that the size of the fed particles is relatively uniform, avoiding blockage of the pipes caused by clumped particles, and also avoiding insufficient melting of the particles, thereby ensuring the quality of the injection-molded automotive parts.

[0020] Example 2: Figure 1 - Figure 2 As shown, the screw conveying mechanism 3 includes a reduction motor 31, a long cylinder 32, and a screw shaft 33. The discharge bin 51 is fixedly connected to the upper outlet position of the long cylinder 32. The screw shaft 33 is rotatably installed inside the long cylinder 32. One end of the screw shaft 33 is fixedly connected to the screw shaft 33 via a coupling. The reduction motor 31 and the long cylinder 32 are both fixedly connected to the upper inclined surface of the support frame 2. The collection bin 4 is fixedly connected above the lower inlet of the long cylinder 32.

[0021] The overall effect of this embodiment is that the speed reduction motor 31 is started, and after the speed reduction motor 31 reduces speed and increases torque, it drives the spiral shaft 33 to rotate in the long tube 32, which puts the plastic particles into the collection bin 4. After the spiral blades of the spiral shaft 33 rotate, the plastic particles are conveyed upward along the inner wall of the long tube 32, which makes it convenient for the operator to complete the feeding into the cylinder at a low position and avoids frequent lifting for feeding.

[0022] The device is used and operates as follows: During use, the device is positioned outside the injection molding machine, with the particle dispersion mechanism 5 vertically located inside the injection molding machine's barrel. While the injection molding machine is preheating, the reduction motor 31 is started. After the reduction motor 31 decreases speed and increases torque, it drives the spiral shaft 33 to rotate within the long tube 32, feeding plastic particles into the collection bin 4. The rotating spiral blades of the spiral shaft 33 then convey the plastic particles upwards along the inner wall of the long tube 32. The servo motor 56 drives the central shaft 59 to rotate between the perforated plate 58 and the ring shell 53 via a coupling. The central shaft 59 drives the connecting seat 57 to rotate, thereby causing the multiple sets of rollers 52 mounted on its outer side to perform a fan-shaped motion. When the plastic particles are conveyed... After being fed to the upper outlet of the long tube 32, the particles enter the discharge bin 51 and fall directly onto the perforated plate 58. The aperture of the perforated plate 58 is slightly larger than the average size of the plastic particles. Therefore, the unagglomerated particles pass directly through the holes of the perforated plate 58, while the agglomerated plastic particles will disperse after impact as they fall into the discharge bin 51. The remaining agglomerated plastic particles remain on the perforated plate 58, and the rotating roller 52 disperses them under the action of the perforated plate 58. Finally, the particles fall into the ring shell 53 through the holes of the perforated plate 58. The bottom of the inner cavity of the ring shell 53 is an inclined surface with a high center and low edge. The particles roll along the inclined surface and enter the barrel of the injection molding machine through multiple sets of discharge pipes 54, thus preventing agglomerated particles from entering the injection molding machine.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A feeding mechanism for an injection molding machine for automotive parts, comprising a base frame (1), a support frame (2), and a material collection bin (4), characterized in that: The support frame (2) is installed obliquely on the upper side of the base frame (1). A spiral conveying mechanism (3) is fixedly installed on the upper side of the support frame (2). A particle dispersing mechanism (5) is fixedly connected to the upper end of the spiral conveying mechanism (3). The particle dispersing mechanism (5) includes a discharge bin (51), a roller (52), an annular shell (53), a discharge pipe (54), a connecting frame (55), a servo motor (56), a connecting seat (57), a perforated plate (58), and a central shaft (59). Multiple sets of rollers (52) are arranged in a circular array and rotated on the outside of the connecting seat (57). The connecting seat (57) is fixedly connected to the upper end of the central shaft (59). The central shaft (59) passes through the perforated plate (58). The rollers (52) roll on the upper side of the perforated plate (58). The perforated plate (58) is fixedly installed on the upper end of the annular shell (53). Multiple sets of discharge pipes (54) are fixedly connected to the outer opening of the annular shell (53).

2. The feeding mechanism of an injection molding machine for automotive parts according to claim 1, characterized in that: The bottom of the inner cavity of the ring shell (53) is a frustum inclined surface, and the central shaft (59) passes through the ring shell (53) and is fixed to the output shaft of the servo motor (56) through a coupling.

3. The feeding mechanism of an injection molding machine for automotive parts according to claim 2, characterized in that: The ring shell (53) is fixedly connected to the upper side of the connecting frame (55), and the servo motor (56) is fixedly connected to the middle part of the connecting frame (55).

4. The feeding mechanism of an injection molding machine for automotive parts according to claim 3, characterized in that: The material discharge bin (51) is fixedly connected to the ring shell (53) by bolts, and the connecting seat (57) is located in the middle of the upper side of the perforated plate (58).

5. The feeding mechanism of an injection molding machine for automotive parts according to claim 4, characterized in that: The screw conveying mechanism (3) includes a geared motor (31), a long tube (32) and a screw shaft (33). The discharge bin (51) is fixedly connected to the upper outlet position of the long tube (32). The screw shaft (33) is rotatably installed inside the long tube (32). One end of the screw shaft (33) is fixedly connected to the screw shaft (33) through a coupling.

6. The feeding mechanism of an injection molding machine for automotive parts according to claim 5, characterized in that: The geared motor (31) and the long tube (32) are both fixedly connected to the upper inclined surface of the support frame (2), and the collection bin (4) is fixedly connected above the lower inlet of the long tube (32).

Images